TY - JOUR
T1 - Conjugated Polyions Enable Organic Photovoltaics Processed from Green Solvents
AU - Ye, Gang
AU - Doumon, Nutifafa Y.
AU - Rousseva, Sylvia
AU - Liu, Yuru
AU - Abdu-Aguye, Mustapha
AU - Loi, Maria A.
AU - Hummelen, Jan C.
AU - Koster, L. Jan Anton
AU - Chiechi, Ryan C.
N1 - Funding Information:
This work is part of the research program of the Foundation for Fundamental Research on Matter (FOM), which is part of The Netherlands Organization for Scientific Research (NWO). This is a publication by the FOM Focus Group “Next Generation Organic Photovoltaics”, participating in the Dutch Institute for Fundamental Energy. G.Y. and Y.L. acknowledge financial support from the China Scholarship Council (CSC). N.Y.D. acknowledges financial support from the Zernike Bonus Incentive Scheme.
Publisher Copyright:
© 2019 American Chemical Society.
PY - 2019/3/25
Y1 - 2019/3/25
N2 - This paper describes the design, synthesis, and optical and electronic properties of two conjugated polymers CPIZ-B and CPIZ-T that incorporate closed-shell cations into their conjugated backbones, balanced by anionic pendant groups. The zwitterionic nature of the polymers renders them soluble in and processable from polar, protic solvents to form semiconducting films that are not doped. These unique properties are confirmed by absorption and electron paramagnetic resonance spectroscopy. The energies of the unoccupied states respond to the tritylium moieties in the conjugated backbone, while the occupied states respond to the electron-donating ability of the uncharged, aromatic units in the backbone. Films cast from 80:20 HCOOH/H2O by volume show good electron mobilities, enabling a photovoltaic effect in proof-of-concept, bilayer solar cells.
AB - This paper describes the design, synthesis, and optical and electronic properties of two conjugated polymers CPIZ-B and CPIZ-T that incorporate closed-shell cations into their conjugated backbones, balanced by anionic pendant groups. The zwitterionic nature of the polymers renders them soluble in and processable from polar, protic solvents to form semiconducting films that are not doped. These unique properties are confirmed by absorption and electron paramagnetic resonance spectroscopy. The energies of the unoccupied states respond to the tritylium moieties in the conjugated backbone, while the occupied states respond to the electron-donating ability of the uncharged, aromatic units in the backbone. Films cast from 80:20 HCOOH/H2O by volume show good electron mobilities, enabling a photovoltaic effect in proof-of-concept, bilayer solar cells.
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U2 - 10.1021/acsaem.8b02226
DO - 10.1021/acsaem.8b02226
M3 - Article
AN - SCOPUS:85064808466
SN - 2574-0962
VL - 2
SP - 2197
EP - 2204
JO - ACS Applied Energy Materials
JF - ACS Applied Energy Materials
IS - 3
ER -
